Electric pumping-engine.



S. BBUNAU.

ELECTRIC PUMPING ENGINE.

(Application fili?. Oct. 9, 1.901.)` v (No Model.) 2 sheets-Sheet I.

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Patented lune 3, |902.

s. BnuNAu. ELECTRIC PUMPING ENGINE.

(Application led Oct. 9, 1901.)

2 Sheets-Sheet 2,.

(No Model.)

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. Mw), d ATTORNEY UNITED TnThe PnThnT Orr-Ice.

SVEN,BRUNA, OF KPING, SVEDEN, ASSIGNOR TO DE LAVALSTEAM TURBINE COMPANY, A CORPORATION OF NEIV JERSEY.`

ELEC-rale .Puttane- Encina SPECIFICATION forming part of `Letters Patent No. 701,536, dated June 3, 1902.

Application filed October 9; 1901-. Serial No. 78,093. No model.)

T0 all whom, it may concern:

Beit known that I, SVEN BRUNAU, of Kping, Sweden, have invented a new and useful Improvement in Electric Pumping-Engines, of which the following is a specification.'

The object of myinvention is to provide a portable electric pumping-engine especially adapted for the extinguishment of lires, hav-v ing an electric motor and a rotary pump so constructed, arranged, and combined with a suitable vehicle that the entire apparatus may be readily drawn to the scene of con flagraton and there instantly connected, the pump to whatever source of liquid-supply may be available and the motor to theelectricdighting mains or other source of electric current.

My invention consists in the construction of the apparatus so that all working parts are hermeticallyinclosed in a metal drum or cylinder havingon its exterior the liquid and electric connections; in the division of saidrcylin` der into two compartments, one of which contains the pump and the other the electric motor, so that no leakage from the pumpcom partment can pass to that of themotor; in the arrangement of the openings in said compartments so as to permit of ready'inspection of and easy access to the motor and itsbearings or the introduction of'liquid to the pump for use as priming; in the means'for regulating from the exterior of the inclosing chamber the tightness of the joint where the rotary shaft passes through the partition between said two compartments, and in the various instrument-alities and combinations more particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a rear elevation, Fig. 2 is a longitudinal section, and Fig. 3 is a plan view, of my im-` proved electric re-engine.

Similar letters of reference indicate like parts.

The apparatus is carried on a rectangular frame h, which is supported on wheels h. All of the mechanism is included within casings, as will hereinafter be described, so that externally the device is in the form of a closed cylinder or drum A, provided with projecting side brackets B, Figs. l and 2, which brackets are bolted to the upper sides of the longitudinal bars of the frame 7L. The axle C is downwardly curved atits middle portion to extend below 'the cylindrical casing, so that said cylinder lies` between the Wheels and a portion of it extends below the line joining the wheel-centers. The cylinder is composed of the'pump-casing @,*p'rovided with the head d and secured-in any suitable Way to one side of' the ring r, whichis integral with the polepieces ofthe field-magnet coils 7.: of the electric lnotor. 'On the other vside of ring 7s' is secured a casing or head cwhich carries the bearing b' for the shaft c of the said motor. The upper portion 7a3 of the casing 7a2 is loose and is provided with a ring q, encircling the bearing b', and 'also a flanged edge n'entering a groove in the casing 7a2. Said portion k3 has a handle 704, by means of which it Vmay be rotated' around `the bearingnb, so .as to expose the interior of `casing 702, and thus allow of access to the bearings therein." The shaft cf carries the motor-armature lgwhi'ch is secured to it in any suitable way in proper relation lto the field-magnets, and also a centrifugal pumpwheel cl', which is disposed within the casing a. The hub`of said Wheel incloses the end of shaft c and is provided with a longitudinal slot d2, through which passes the key whereby said hnbis secured vto said shaft. The slot is made long enough to permit some lateral `movement of the hub on the shaft. Hence by means of the'set-screw p, which passes through a projection on the head d, the inner face ofjsaidlhub may be forced against `the corresponding faceof a sleeve e, formedintegrally with casin g Cl,through which sleeve said shaft c passes. In this way a tight joint between wheel-hub and casing is obtained, which joint may be packed bythe introduction of a washer e' betweenthe lfaces of hub and sle eve. v,The sleeve e is made large enough to receive an inner sleeve l), which at ICO projections for the attachment of the suction anddeliverypipes. The suction-pipeisshown at m and is attached by any suitable couppling to the projection m. The delivery-pipe is shown at Z and is attached in like manner to the projection Z. 1 In order to till the casing d and suction-pipe with water on starting the pump, an opening o is provided at the upper portion of casing a, which opening is closed by the loose plate '02. Said plate is tightly secured in place by the tighteningscrew and plate o.

The motor-terminal sconnect with any suitable form of 'circuit-breaker arranged in the box above the motor and operated by means of the hand-wheel y. On the exterior of said box are binding-screws s s', to which are connected the Wires t, by which the circuit is conveyed to the motor from the junction-box u, Fig. 1. The suction-hose m is connected by anysuitable couplingtothestreettire-mainm2.

In order to cool the electric motor, I provide surrounding the ring 7c' a circumferential recess o, which is closed by the circular plate o. Said recess communicates by the pipe o2 with the pressure -chamber of the pump, so that it is thus kept filled with Water.

While my invention is an electricpumpingengine suitable to many uses, I especially design it for employment as a fire-engine, and especially in villages or other small settlements Where there is no water-supply under pressure, but where there is already established an electric-lighting plant. The electric mains necessarily go to every house of the settlement, no matter how far distant it may be from others. Every house also necessarily has some source of water-supply-as, for example, a well, driven or otherwise. All that would be required, then, in order to make my engine at once available for the protection of the house would be the establishment thereat of a place of electric connection, u u, Fig. l, for the motor-conductors t t and a suction connection with the well. The persons in charge ofthe engine on bringing it to the premises would have simply to make these connections-the work of a momentand the engine could at once deliver the stream. So, also, the engine could. be utilized for the irrigation of crops, lawns, rbc., the drainage of ponds and pools, and a variety of other purposes.

In cities having regular Water and electric supply my engine may not only be used for fire purposes, but for the Bushing of streets and sewers-a class of work which now falls upon the steam fire apparatus, but which could be much more conveniently and cheaply done by an auxiliary electric pumping-engine taking its current directly from the street electric mains.

I claimy l. The combination in an electric pumpingengine of a vehicle, an inclosing drum or cylinder supported on said vehicle and divided into two compartments, an electric motor disposed in one compartment and a rotary pump actuated thereby in the other compartment, and on the exterior of said cylinder means for connecting suction and delivery pipes to said pump-compartment and means for connecting a source of electric current to said motor.

2. The combination in an electric pumpingengine of a vehicle, an inclosing drum or cylinder supported on said vehicle and divided into two hermetically-closed compartments, each provided with an opening for allowing access to its interior and with means for closing said openings, an electric motor disposed in one compartment and a rotary pump actuated thereby in the other compartment, and on the exterior of said cylinder means for connecting suction and delivery pipes to said pump-compartment and means for connecting a source of electric current to said motor.

3. The combination in an electric pumpingengine of an inclosing cylinder or drum divided into two compartments, an electric motor in one of said compartments, a rotary pump in the other compartment, a shaft extending through both compartments and carrying the armature of said motor and the wheel of said pump, means for connecting said motor and said pump respectively to sources of electric current and liquid supply, and means exterior to said drum for regulating the tightness of the joint between said shaft and the partition dividing said compartments.

SVEN BRUNAU.

Witnesses:

WALDEMAR BoRNAU, TE. RIDDERsToLPn.

IOO 

